Quartz and Feldspar Cluster – NER 021

Gemmy quartz crystals and feldspar with black tourmaline crystals


Measurements: 
53 x 26 x 19 mm

Description:  A beautiful arrangement of gemmy quartz crystals and lovely sprays of feldspar with minute black tourmaline crystals. 

There are some feldspar and schorl inclusions in some of the quartz crystals.  

The specimen has very little damage.

Weight of Specimen:  17.8 g

Chemical Composition:  SiO2  (quartz)                                          
                                   KAlSi3O8   (feldspar) 
                                   NaFe2+3Al6Si6O18(BO3)3(OH)4  (schorl)

Hardness on Mohs Scale:  (quartz)  7                                                                                                                                        (feldspar)  6 - 6.5
                                      (schorl
) 
7.5

Location:  Erongo Mountains, Erongo Region, Namibia.

Specimen Code:  NER 021

US $ 45



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